Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Smithville Formation  | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Ordovician | |
| ....Lower Ordovician | |
| .....Smithville Formation | |
| RT | Missouri |
| Arkansas | |
| SN | Above Powell Formation and below Black Rock Limestone in N Arkansas, and below Everton Formation in SE Missouri. N Arkansas and SE Missouri. |